Stove or furnace



2 Sheets-Sheet l.

(No Model.)

W. MASTERS.

STOVB ,on PURNAGE.

Patented Aug. 29, 1882.

MATTE @Ny5 N, PUERS, Fhumumngnvhen washington. D1 c.

(No Model.)

' 2 Sheets-Sheet 2. W. MASTERS. l

STOVE 0R FURNAGE.

Patentedl Aug. 29, 1882.

ETERs. Pnowmnogmphu. washington. n. c.

Unire STATES Arnivr einen.

WILLIAM MASTERS, oF KA-Nsnscirv, MISSOURI.

STOVE 0R FU RNACE.

SPECIFICATION forming part of Letters Patent No. 263,552, dated August 29, 1882.

Application l'cd J une 10, 18E?. (No model.)

To all whom it may concern:

Beit known that l, WILLIAM MASTERS, of' Kansas City,in the county ot' Jackson and State ot'lMissouri, have invented certain new and useful improvements in stoves or furnaces for burning` bituminous coal or other fuels rich in hydrocarbon, of which the following is a specification.

My invention relates to that class of stoves and furnaces wherein the tire-box isseparated from the combustion-chamberand airis introduced at a point intermediate the two for the purpose of producing` more complete combustion.

The object of nl v invention is to provide a stove or furnace of such improved construction and with air-delivery orifices so arranged as to insure the more effective combustion of the rich hydrocarbon gases and particles offree carbon usually carried away by the draft as a waste product. This object of my invention I accomplish by certain novel features of construction hereinafter described, illustrated in the accompanying drawings, and particularly pointed out in the claims at the end of this specification.

Figure l is a longitudinal vertical sectional view on line a n of Fig. 2 of a cooking-stove embodying my invention, the rear portion of the stove being broken away. Fig. 2 is aplan view of the same, partlyin section, on line x of Fig. l. Fig.3 is a verticallongitudinalmidsection ofaboiler-furnace with my improvement vapplied thereto, a portion of the boiler being broken away.

Likeletters of reference indicate corresponding parts in the several views ofthe drawings.

A designates the outer wall or casing of a stove, having a fire-box, B, provided at its bottom with the grate O, below which is the ashpit D. The fire-box B and the ash-pit D are furnished respectively with the doors E and E', having` dampers e and e therein. From the ash-pit D extends the draftchamber F, the top of which is formed by the inclined tirewall G,the lower halfof which is provided with the series ot'perl'orations g, extending laterally across the same. Instead of perforations, oblong slots may be made in the fire-wall, as shownin Fig. 2. The top of the lire-wall is bolted, as shown, to the top plate, h, of the oven H, the frontplate,i,ofwhichconstitutes one of the walls ofthe draft-chamber F. The bottom ofthe tire-wall Gis formed with the angular portion I, the ends of which rest upon the grate-supports upon the sides ofthe stove.

To the long center plate, k, ofthe stove-top is securely bolted, by means of the rods Z3, one near each end, the U-shaped pendent air-duct L, which extends laterally across the stove and opens outside the same. One. or both ends of this air-duct are preferably provided with the dampers l. The bottom of the air-duct depends within a short distance ofthe fire-Wall Gr at a point over the perforations or slots ot' said wall, and its lower portion is provided with the series ot' perforations l', in substantially the position shown. Back of the airduct L is formed the combustion chamber M, from which extends the iiue leading` tothe chimney.

When myinvention is applied in connection with furnaces, asshown in Fig. 8, the air-duct L may be sustained in any suitable manner, as fromthe sides of the furnace, and the lirewall G may rest upon the bridge O and upon ledges formed on the inner surface of the furnace sides. In this arrangement the several parts are designed to hold the same relation to each other and to act in substantiallythe ina-nner as in the construction heretofore described. It will be noticed that by extending the airduct, as described, in proximity to the lower portion of the inclined fire-wall thereis formed a lire-box in which the complete distillation 0f the gases occurs, and separate therefrom a combustionehamber, which is gradually enlarged from bottom to top, so as to permit the gases, when mixed with air, to expand. This last feature is ofimportance, since the freshlydistilled gases escaping below the air-duct, when mingled with the air, will not be thoroughly consumed unless they are allowed to freely expand. Hence were no enlarged chamber provided for this purpose a portion of the gases would 'pass unburned into the chimney or a portion of the stove or furnace, where its combustion would have but little effect. The preheating of the air by delivering the same through the ash-pit to the perforations ofthe :inclined tire-wall is advantageous, as it enables more thorough combustion to be ef- IOO fected withoutchillingthe stove; and the location ofthe pcrl'orations in the lire-walland airduct is important, as the airis thus delivered to the gas at the most eflective point, permitting the two to become thoroughlycommingled in the passage through the combustion-chamber.

In the operation of a stove or furnaceof the character set forth the fresh fuel is fed into the firebox as in stoves or furnaces generally and is there coked, giving otl'its more volatile compounds of rich hydrogen in the form of rich hydrocarbon gases, which are laden with particles of free carbon,torming smoke or soot, and as this fuel is coled fresh fuel is added. The gases generated,aud with the freecarbon, are compelled to pass under the pendent airduct, and here, meeting with the oxygen from the air-duct and perforated or slotted inclined lire-wall, are ignited and consumed. By means ofthe several dampers the quantity o1' air admitted can be accurately controlled.

I am aware of the inventions described in Patent No. 181,634, granted to I). N. Burke August 29, 1876,'and in Patent No. 220,530, granted to \Villiam A. Greene October 14,1879, and I do not wish to be understood as claiming subject-matter described therein; but

Vhat I claim as new, and desire to secure by Letters Patent, is-

1. A stove o1; furnace having a lire-box, an inclined tire-wall, and a pendent perforated airduct, forming the rear wall ofthe lire-box and extending in proximity to the lower portion of the inclined fire-wall, the air-duct being related to the tire-wall in such manner as to form with it an enlarged combustion-chamber for the gases escaping from the tire-box, substantially as described.

2. A stove or furnace having a lire-box, an inclined lire-wall having perforations or slots near its bottom, and a pendentperforated airduct located above said fire-wall and extending in proximity to its lower portion, so as to form therewith a combustion-chamber gradually enlarged from bottom to top, substantially as described.

3. A stove or furnace having a tire-box, a p( ndent perforated ainduct forming the back of said fire-box and extending to a' point in proximity to the lower portion ot' an inclined perforated fire-wall, an ash-pit, and a chamber extending` therefrom and communicating directly with the perforations in said inclined lire-walls, substantially as described.

WILLIAM MASTE 1S.

lVitnesses:

Jamas (5L/mim, GHAs. A. MANN. 

